Two Reuters journalists jailed in Myanmar on charges of breaking the country's Official Secrets Act are innocent, according to the British government.

Wa Lone, 32, and Kyaw Soe Oo, 28, were investigating the killing of villagers from the Rohingya Muslim minority by security forces and civilians when they were arrested in December.

A Myanmar judge on Monday found two Reuters journalists guilty of breaching a law on state secrets and jailed them for seven years.